HiSilicon Kirin 990 4G Advantages
Higher Frequency (2860MHz vs 2840MHz)
Released 10 months late
Qualcomm Snapdragon 855 Advantages
Better graphics card performance FLOPS (0.8985 TFLOPS vs 0.6912 TFLOPS )
Larger memory bandwidth (34.13GB/s vs 34.1GB/s)